Frost dates 2026–2027

Frost dates for Geneseo, New York

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Mt Morris 2 W, 6.7 mi away (close match).

Last spring frostApr 30
First fall frostOct 17
170 frost-free days
Last spring frostApr 301 year in 10 after May 13
First fall frostOct 171 year in 10 by Oct 1
Growing season170 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Geneseo in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 32°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).

Tonight: forecast low 48°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.

2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.

Frost and freeze probabilities

Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.

These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.

Average first hard freeze in Geneseo

The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Mt Morris 2 W. This is the 50% probability date, not a forecast for this year.

TemperatureLast spring date
90% · 50% · 10% chance of a later freeze
First fall date
10% · 50% · 90% chance of an earlier freeze
Season
36°F frost possible Apr 26 · May 9 · May 25 Sep 22 · Oct 4 · Oct 19 147 days
32°F freeze Apr 17 · Apr 30 · May 13 Oct 1 · Oct 17 · Nov 2 170 days
28°F hard freeze Apr 4 · Apr 18 · May 2 Oct 13 · Nov 1 · Nov 15 195 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00305597. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Mt Morris 2 W

Average low temperature by month

Months with lows near or below freezing carry frost risk

Where these frost dates come from

The frost dates for Geneseo, NY come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Mt Morris 2 W (station USC00305597, elevation 880 ft), 6.7 mi from Geneseo. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.

Frost dates near Geneseo

CityDistanceLast spring frostFirst fall frost
Batavia, NY 24 mi May 3 Oct 16
East Rochester, NY 27 mi May 2 Oct 17
Rochester, NY 27 mi Apr 24 Oct 25
Canandaigua, NY 27 mi Apr 29 Oct 22
Fairport, NY 28 mi May 2 Oct 17
Brockport, NY 29 mi Apr 24 Oct 30
Hornell, NY 33 mi May 11 Oct 8
Hilton, NY 34 mi Apr 24 Oct 30
Webster, NY 35 mi May 1 Oct 20
Albion, NY 37 mi May 1 Oct 20

Frequently asked questions

When is the last frost in Geneseo?

On average, the last spring frost (32°F) in Geneseo is around April 30. In about 1 year in 10 it comes after May 13, and in 9 years in 10 it comes after April 17.

When is the first frost in Geneseo?

The first fall frost (32°F) usually arrives around October 17. There’s a 10% chance of a freeze by October 1 and a 90% chance by November 2.

Can it frost in Geneseo after the last frost date?

Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 9.

What growing zone is Geneseo?

Geneseo is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 14454. See growing zones in New York.

More: all New York frost dates · New York growing zones · frost vs. freeze